Specifications

Chapter 6: Error Messages
37
1-3-1-3 22h Test 8742 Keyboard Controller
24h Set ES segment to register to 4GB
28h Autosize DRAM
2Ah Clear 512KB base RAM
1-3-4-1 2Ch Test 512KB base address lines
1-3-4-3 2Eh Test low byte of 512KB base memory
1-4-1-1 30h Test high byte of 512KB base memory
32h Test CPU bus-clock frequency
34h Test CMOS RAM
35h Initialize alternate system controller registers
36h Warmstart shutdown entry point
37h Reinitialize the system controller
38h Shadow system BIOS ROM
39h Reinitialize the cache
3Ah Autosize cache
3Ch Configure advanced system controller registers
3Dh Load alternate registers with CMOS values
40h Set Initial CPU speed
42h Initialize interrupt vectors
44h Initialize BIOS interrupts
2-1-2-3 46h Check ROM copyright notice
47h Initialize manager for PCI Option ROMs
48h Check video configuration against CMOS
49h Initialize PCI bus and devices
4Ah Initialize all video adapters in system
4Bh Display QuietBoot
 screen
4Ch Shadow video BIOS ROM
4Eh Display copyright notice
50h Display CPU type and speed
51h Initialize EISA board
52h Test keyboard
54h Set key click if enabled
56h Enable keyboard
2-2-3-1 58h Test for unexpected interrupts
5Ah Display prompt “Press F2 to enter SETUP”
5Ch Test RAM between 512KB and 640KB
60h Test extended memory
62h Test extended memory address lines
64h Jump to UserPatch1
66h Configure advanced cache registers
68h Enable external and CPU caches
6Ah Display external cache size
6Ch Display shadow message
6Eh Display non-disposable segments
70h Display error messages
72h Check for configuration errors
Beep code Post code Checkpoint description